Fish tank cleaning device



FIG. 1 is a front elevated view of a fish tank cleaning device showing my new design.

FIG. 2 is a rear elevated view of the fish tank cleaning device.

FIG. 3 is a right side elevated view of the fish tank cleaning device.

FIG. 4 is a left side elevated view of the fish tank cleaning device.

FIG. 5 is a top plan view of the fish tank cleaning device; and,

FIG. 6 is a bottom plan view of the fish tank cleaning device.

The electrical cord shown in the drawings is shown broken away to indicate indeterminate length. 

The ornamental design for a fish tank cleaning device, as shown and described. 